di_node_private_get
flags = (uint_t)(uintptr_t)di_node_private_get(parent);
dev_flags = (uint_t)(uintptr_t)di_node_private_get(dev);
long data = (long)di_node_private_get(node);
long data = (long)di_node_private_get(node);
extern void *di_node_private_get(di_node_t node);